Perhaps you should try some spelling variations:
ying human » being human, using human, ying hua
human gene » human genome, human gender, human bone
yan ying » fan ying, ran ying, tan ying
yang jin » yang jie, yang jun, ying jin
wong sam » wong sau, wong lai, kong sar
wong siu » wong shiu, kong siu, wong sau
yan jiu » yang jie, pang jiu
wang » wing, wan, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan ying human gene ((yan jiu) or (yang jin)) ((wong sam) or (wong siu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ying human gene ((yan jiu) OR (yang jin)) ((wong sam) OR (wong siu)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yan ying human gene ((yan jiu) or (yang jin)) ((wong sam) or (wong siu)) ;*.